The world’s infrastructure is crumbling, so we’re seeing a rise in bridges that need to be replaced. That’s good news for the companies that build those bridges and for those of us that enjoy a good demolition video. People have certainly gotten more creative with how these demolitions are filmed and this latest video your about to see gives you the ability to see the same demolition from 4 different angles and in different speeds.
The Merafield Bridge, near Plymouth, England was built in 1969 and has suffered from Alkalai-Silica Reaction, which is commonly referred to as “concrete cancer.” Alkalai-Silica Reaction creates spalling due to a gel being formed inside the concrete that expands with water. As the gel expands, pressure builds up in the structure and the concrete cracks. The demolition of the old bridge is part of a $9.1 million (£6.3 million) project that will also include a brand new 262 foot long (80m) bridge. The new bridge will require 2,503 tons of concrete and 401 tons of steel.
In order to bring down the old bridge, crews drilled 278 holes and packed in 110 pounds (50kg) of explosives, according to the Daily Mail. The end result was a middle of the night fireworks show followed by a giant cloud of smoke. You can watch the incredible footage, uploaded to Youtube by SWNS TV, below:
New demolition videos are always fun to watch. You know what’s even better, though? A bunch of demolitions all at once.
While being prepared for demolition, the Grand Avenue Bridge in Glenwood Springs, Colorado unexpectedly collapsed to the railroad tracks below. Thankfully, no injuries were reported, but the local police chief said that workers had to flee the scene once the bridge section started to fall.
Smoke stack demolitions are always fun to watch because they typically stand much taller than the buildings surrounding them, giving cameras great views of the carnage. They don’t always go well, like when a 2.6 million pound brick stack fell directly on top of an excavator (the operator was fine, by the way), but they’re always dramatic.
Buildings are demolished all the time in order to make way for new construction. The buildings that are demolished have usually lived out their useful life and are no longer functional. Recently a demolition video resurfaced, which shows a 27 story building in China being imploded. The strange thing is that, since it was finished in 1999, the building had never even been used.
A nearby office worker caught video of a dramatic demolition that showed the remains of an 11 story building collapse on top of the excavator performing the demolition.
In order to get the bad taste of last week’s botched demolition, in which an adjacent building also got destroyed in the process, we needed to share a highly successful one. Priestly Demolition, a Canadian demolition contractor, has been the subject of our articles in the past and the company has even won awards for the best demolition in the world.
Mistakes during demolitions happen. Sometimes contractors knock down the wrong buildings, other times the explosives used don’t knock the building over, and other demolitions are carried out with a complete lack of regard for human life. As fun as they are to perform and watch, they’re inherently dangerous and there should be a plan in place in case things go wrong.
Construction Junkie has shared a lot of demolition videos. Typically, people line up waiting for the moment when the building explodes with their eyes peeled and cameras ready, just waiting for the perfect video. This video, however, is much different.
Early this year, a landslide caused catastrophic failure to the Pfeiffer Canyon Bridge along California’s famous Highway 1. California Transit officials closed the bridge on February 21st and announced it would be demolished and replaced. Time is of the essence as US News reports that over 400 residents are stranded on one side of the bridge and helicopters have had to bring in food for them. The residents are still able to use the footpaths in the area to cross the canyon.
There’s no doubt that bridge demolitions by implosion are extremely fun to watch, but the fireworks show and big splash into the water below can sometimes overshadow other demolition projects that don’t allow implosion. Priestly Demolition Inc. (PDI) recently won two 2016 World Demolition Awards for one of those projects where implosion was not an option and they have also produced an incredibly detailed video of how they did it.